MSD 8739 Two Step Module Selector Instruction Manual

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The MSD 8739 Two Step Module Selector is designed to provide precise RPM control for automotive ignition systems. It allows users to switch between two distinct RPM or timing retard modules, enhancing vehicle performance and control, particularly in racing applications. This unit is intended for use with MSD Soft Touch Rev Controls or MSD Timing Computers.

Image: The MSD 8739 Two Step Module Selector, a compact electronic device with wiring terminals.

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• MSD 8739 Two-Step Module Selector

ການຕິດຕັ້ງແລະການຕິດຕັ້ງ

The MSD 8739 Two Step Module Selector requires connection to an existing MSD Soft Touch Rev Control or MSD Timing Computer. Professional installation is recommended.

ການເຊື່ອມຕໍ່ສາຍໄຟ:

Refer to the wiring diagram provided with your MSD Soft Touch Rev Control or Timing Computer for specific connection points. The 8739 unit typically connects to the module input terminals of the main ignition control unit.

• ພະລັງງານ: Ensure the ignition system is off before making any connections.
• ການເລືອກໂມດູນ: The 8739 unit facilitates switching between two RPM modules (not included). Insert the desired RPM modules into the designated slots on the 8739 selector.
• ສະວິດເປີດໃຊ້ງານ: Connect an external switch (e.g., a clutch switch or transbrake switch) to the 8739 unit to activate the second RPM limit.

Note: RPM Modules are sold separately and are not included with the 8739 Two Step Module Selector.

ຄໍາແນະນໍາການດໍາເນີນງານ

The MSD 8739 Two Step Module Selector allows for two distinct RPM limits to be used. One RPM limit is active by default, and the second RPM limit is activated via an external switch.

Setting RPM Limits:

1. Install the desired RPM modules into the 8739 selector. For example, a lower RPM module for launch control and a higher RPM module for general engine protection.
2. Ensure the 8739 unit is correctly wired to your MSD ignition control and the activation switch.

Using the Two Step Function:

When the activation switch (e.g., clutch pedal depressed, transbrake engaged) is active, the 8739 unit will engage the RPM limit of the second module. Releasing the switch will revert to the RPM limit of the first module.

This functionality is commonly used for consistent launch RPMs in drag racing or other performance applications.

ບໍາລຸງຮັກສາ

The MSD 8739 Two Step Module Selector is a solid-state electronic device and requires minimal maintenance.

• ການກວດກາ: ກວດ​ສອບ​ທຸກ​ສາຍ​ເຊື່ອມ​ຕໍ່​ສາຍ​ໄຟ​ເປັນ​ໄລ​ຍະ​ເພື່ອ​ໃຫ້​ເຫັນ​ຄວາມ​ແໜ້ນ​ໜາ ແລະ​ສະ​ແດງ​ໃຫ້​ເຫັນ​ວ່າ​ມີ​ການ​ສວມ​ໃສ່​ຫຼື corrosion.
• ທໍາຄວາມສະອາດ: Keep the unit clean and free from excessive dirt, moisture, and extreme temperatures. Use a dry, soft cloth for cleaning.
• ການດູແລໂມດູນ: Handle RPM modules carefully. Ensure they are seated correctly in the selector.

ການແກ້ໄຂບັນຫາ

If you experience issues with your MSD 8739 Two Step Module Selector, consider the following:

• No Second RPM Limit:
  • Check all wiring connections, especially the activation switch. Ensure the switch is functioning correctly.
  • Verify that the RPM modules are correctly inserted and are the correct type for your application.
  • Confirm that your MSD ignition control unit is compatible with the 8739 selector.
• Incorrect RPM Limit:
  • Ensure the correct RPM modules are installed for the desired limits.
  • Check for any loose connections that might cause intermittent signals.
• ໜ່ວຍງານບໍ່ເຮັດວຽກ:
  • Verify power supply to the MSD ignition control unit.
  • Inspect for any visible damage to the 8739 unit or its wiring.

For further assistance, contact MSD technical support.

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ຂໍ້ມູນການຮັບປະກັນ

This product is covered by a manufacturer's warranty. For specific details regarding warranty coverage, duration, and claims process, please refer to the documentation included with your purchase or visit the official MSD webເວັບໄຊ.

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Installation should be performed by qualified personnel to avoid damage to the product or vehicle.

ສະຫນັບສະຫນູນ

For technical assistance, product inquiries, or troubleshooting support, please contact MSD customer service.

MSD Official Webເວັບໄຊ: www.msdperformance.com

ກະ​ລຸ​ນາ​ມີ​ຕົວ​ແບບ​ຜະ​ລິດ​ຕະ​ພັນ​ຂອງ​ທ່ານ (8739​) ແລະ​ຂໍ້​ມູນ​ການ​ຊື້​ພ້ອມ​ທີ່​ຈະ​ຕິດ​ຕໍ່​ຫາ​ສະ​ຫນັບ​ສະ​ຫນູນ​.